Plaid Cymru (English: PLYDE KUM-ree; Welsh: [plaid ˈkəmri]; officially Plaid Cymru – the Party of Wales, often referred to simply as Plaid) is a centre-left and Welsh nationalist political party in Wales, committed to Welsh independence from the United Kingdom.
Plaid was formed in 1925 and won its first seat in the UK Parliament in 1966. The party holds three of 40 Welsh seats in the UK Parliament, 13 of 60 seats in the Senedd, and 202 of 1,264 principal local authority councillors. It is a member of the European Free Alliance.
Principia Cathedra the principals of the chair, from Latin cathedra, as a seat of authority and that which a cathedral's purpose is to indicate the location of such chair.